321 lines
11 KiB
C
321 lines
11 KiB
C
/**
|
|
******************************************************************************
|
|
* @file stm32g0xx_hal_dma_ex.c
|
|
* @author MCD Application Team
|
|
* @brief DMA Extension HAL module driver
|
|
* This file provides firmware functions to manage the following
|
|
* functionalities of the DMA Extension peripheral:
|
|
* + Extended features functions
|
|
*
|
|
@verbatim
|
|
==============================================================================
|
|
##### How to use this driver #####
|
|
==============================================================================
|
|
[..]
|
|
The DMA Extension HAL driver can be used as follows:
|
|
(+) Configure the DMAMUX Synchronization Block using HAL_DMAEx_ConfigMuxSync function.
|
|
(+) Configure the DMAMUX Request Generator Block using HAL_DMAEx_ConfigMuxRequestGenerator function.
|
|
Functions HAL_DMAEx_EnableMuxRequestGenerator and HAL_DMAEx_DisableMuxRequestGenerator can then be used
|
|
to respectively enable/disable the request generator.
|
|
|
|
(+) To handle the DMAMUX Interrupts, the function HAL_DMAEx_MUX_IRQHandler should be called from
|
|
the DMAMUX IRQ handler i.e DMAMUX1_OVR_IRQHandler.
|
|
As only one interrupt line is available for all DMAMUX channels and request generators , HAL_DMAEx_MUX_IRQHandler should be
|
|
called with, as parameter, the appropriate DMA handle as many as used DMAs in the user project
|
|
(exception done if a given DMA is not using the DMAMUX SYNC block neither a request generator)
|
|
|
|
@endverbatim
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© Copyright (c) 2018 STMicroelectronics.
|
|
* All rights reserved.</center></h2>
|
|
*
|
|
* This software component is licensed by ST under BSD 3-Clause license,
|
|
* the "License"; You may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at:
|
|
* opensource.org/licenses/BSD-3-Clause
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "stm32g0xx_hal.h"
|
|
|
|
/** @addtogroup STM32G0xx_HAL_Driver
|
|
* @{
|
|
*/
|
|
|
|
/** @defgroup DMAEx DMAEx
|
|
* @brief DMA Extended HAL module driver
|
|
* @{
|
|
*/
|
|
|
|
#ifdef HAL_DMA_MODULE_ENABLED
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* Private macro -------------------------------------------------------------*/
|
|
/* Private variables ---------------------------------------------------------*/
|
|
/* Private Constants ---------------------------------------------------------*/
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
/* Exported functions --------------------------------------------------------*/
|
|
|
|
|
|
/** @defgroup DMAEx_Exported_Functions DMAEx Exported Functions
|
|
* @{
|
|
*/
|
|
|
|
/** @defgroup DMAEx_Exported_Functions_Group1 DMAEx Extended features functions
|
|
* @brief Extended features functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### Extended features functions #####
|
|
===============================================================================
|
|
[..] This section provides functions allowing to:
|
|
|
|
(+) Configure the DMAMUX Synchronization Block using HAL_DMAEx_ConfigMuxSync function.
|
|
(+) Configure the DMAMUX Request Generator Block using HAL_DMAEx_ConfigMuxRequestGenerator function.
|
|
Functions HAL_DMAEx_EnableMuxRequestGenerator and HAL_DMAEx_DisableMuxRequestGenerator can then be used
|
|
to respectively enable/disable the request generator.
|
|
(+) Handle DMAMUX interrupts using HAL_DMAEx_MUX_IRQHandler : should be called from
|
|
the DMAMUX IRQ handler
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Configure the DMAMUX synchronization parameters for a given DMA channel (instance).
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA channel.
|
|
* @param pSyncConfig Pointer to HAL_DMA_MuxSyncConfigTypeDef contains the DMAMUX synchronization parameters
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_DMAEx_ConfigMuxSync(DMA_HandleTypeDef *hdma, HAL_DMA_MuxSyncConfigTypeDef *pSyncConfig)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
|
|
|
|
assert_param(IS_DMAMUX_SYNC_SIGNAL_ID(pSyncConfig->SyncSignalID));
|
|
|
|
assert_param(IS_DMAMUX_SYNC_POLARITY(pSyncConfig-> SyncPolarity));
|
|
assert_param(IS_DMAMUX_SYNC_STATE(pSyncConfig->SyncEnable));
|
|
assert_param(IS_DMAMUX_SYNC_EVENT(pSyncConfig->EventEnable));
|
|
assert_param(IS_DMAMUX_SYNC_REQUEST_NUMBER(pSyncConfig->RequestNumber));
|
|
|
|
/*Check if the DMA state is ready */
|
|
if (hdma->State == HAL_DMA_STATE_READY)
|
|
{
|
|
/* Process Locked */
|
|
__HAL_LOCK(hdma);
|
|
|
|
/* Set the new synchronization parameters (and keep the request ID filled during the Init)*/
|
|
MODIFY_REG(hdma->DMAmuxChannel->CCR, \
|
|
(~DMAMUX_CxCR_DMAREQ_ID), \
|
|
(pSyncConfig->SyncSignalID | ((pSyncConfig->RequestNumber - 1U) << DMAMUX_CxCR_NBREQ_Pos) | \
|
|
pSyncConfig->SyncPolarity | ((uint32_t)pSyncConfig->SyncEnable << DMAMUX_CxCR_SE_Pos) | \
|
|
((uint32_t)pSyncConfig->EventEnable << DMAMUX_CxCR_EGE_Pos)));
|
|
|
|
/* Process UnLocked */
|
|
__HAL_UNLOCK(hdma);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
/* Set the error code to busy */
|
|
hdma->ErrorCode = HAL_DMA_ERROR_BUSY;
|
|
|
|
/* Return error status */
|
|
return HAL_ERROR;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the DMAMUX request generator block used by the given DMA channel (instance).
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA channel.
|
|
* @param pRequestGeneratorConfig Pointer to HAL_DMA_MuxRequestGeneratorConfigTypeDef
|
|
* contains the request generator parameters.
|
|
*
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_DMAEx_ConfigMuxRequestGenerator(DMA_HandleTypeDef *hdma, HAL_DMA_MuxRequestGeneratorConfigTypeDef *pRequestGeneratorConfig)
|
|
{
|
|
HAL_StatusTypeDef status;
|
|
HAL_DMA_StateTypeDef temp_state = hdma->State;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
|
|
|
|
assert_param(IS_DMAMUX_REQUEST_GEN_SIGNAL_ID(pRequestGeneratorConfig->SignalID));
|
|
|
|
assert_param(IS_DMAMUX_REQUEST_GEN_POLARITY(pRequestGeneratorConfig->Polarity));
|
|
assert_param(IS_DMAMUX_REQUEST_GEN_REQUEST_NUMBER(pRequestGeneratorConfig->RequestNumber));
|
|
|
|
/* check if the DMA state is ready
|
|
and DMA is using a DMAMUX request generator block
|
|
*/
|
|
if (hdma->DMAmuxRequestGen == 0U)
|
|
{
|
|
/* Set the error code to busy */
|
|
hdma->ErrorCode = HAL_DMA_ERROR_PARAM;
|
|
|
|
/* error status */
|
|
status = HAL_ERROR;
|
|
}
|
|
else if (((hdma->DMAmuxRequestGen->RGCR & DMAMUX_RGxCR_GE) == 0U) && (temp_state == HAL_DMA_STATE_READY))
|
|
{
|
|
/* RequestGenerator must be disable prior to the configuration i.e GE bit is 0 */
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(hdma);
|
|
|
|
/* Set the request generator new parameters*/
|
|
hdma->DMAmuxRequestGen->RGCR = pRequestGeneratorConfig->SignalID | \
|
|
((pRequestGeneratorConfig->RequestNumber - 1U) << DMAMUX_RGxCR_GNBREQ_Pos) | \
|
|
pRequestGeneratorConfig->Polarity;
|
|
/* Process UnLocked */
|
|
__HAL_UNLOCK(hdma);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
/* Set the error code to busy */
|
|
hdma->ErrorCode = HAL_DMA_ERROR_BUSY;
|
|
|
|
/* error status */
|
|
status = HAL_ERROR;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Enable the DMAMUX request generator block used by the given DMA channel (instance).
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA channel.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_DMAEx_EnableMuxRequestGenerator(DMA_HandleTypeDef *hdma)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
|
|
|
|
/* check if the DMA state is ready
|
|
and DMA is using a DMAMUX request generator block
|
|
*/
|
|
if ((hdma->State != HAL_DMA_STATE_RESET) && (hdma->DMAmuxRequestGen != 0))
|
|
{
|
|
|
|
/* Enable the request generator*/
|
|
hdma->DMAmuxRequestGen->RGCR |= DMAMUX_RGxCR_GE;
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Disable the DMAMUX request generator block used by the given DMA channel (instance).
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA channel.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_DMAEx_DisableMuxRequestGenerator(DMA_HandleTypeDef *hdma)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
|
|
|
|
/* check if the DMA state is ready
|
|
and DMA is using a DMAMUX request generator block
|
|
*/
|
|
if ((hdma->State != HAL_DMA_STATE_RESET) && (hdma->DMAmuxRequestGen != 0))
|
|
{
|
|
|
|
/* Disable the request generator*/
|
|
hdma->DMAmuxRequestGen->RGCR &= ~DMAMUX_RGxCR_GE;
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Handles DMAMUX interrupt request.
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA channel.
|
|
* @retval None
|
|
*/
|
|
void HAL_DMAEx_MUX_IRQHandler(DMA_HandleTypeDef *hdma)
|
|
{
|
|
/* Check for DMAMUX Synchronization overrun */
|
|
if ((hdma->DMAmuxChannelStatus->CSR & hdma->DMAmuxChannelStatusMask) != 0U)
|
|
{
|
|
/* Disable the synchro overrun interrupt */
|
|
hdma->DMAmuxChannel->CCR &= ~DMAMUX_CxCR_SOIE;
|
|
|
|
/* Clear the DMAMUX synchro overrun flag */
|
|
hdma->DMAmuxChannelStatus->CFR = hdma->DMAmuxChannelStatusMask;
|
|
|
|
/* Update error code */
|
|
hdma->ErrorCode |= HAL_DMA_ERROR_SYNC;
|
|
|
|
if (hdma->XferErrorCallback != NULL)
|
|
{
|
|
/* Transfer error callback */
|
|
hdma->XferErrorCallback(hdma);
|
|
}
|
|
}
|
|
|
|
if (hdma->DMAmuxRequestGen != 0)
|
|
{
|
|
/* if using a DMAMUX request generator block Check for DMAMUX request generator overrun */
|
|
if ((hdma->DMAmuxRequestGenStatus->RGSR & hdma->DMAmuxRequestGenStatusMask) != 0U)
|
|
{
|
|
/* Disable the request gen overrun interrupt */
|
|
hdma->DMAmuxRequestGen->RGCR &= ~DMAMUX_RGxCR_OIE;
|
|
|
|
/* Clear the DMAMUX request generator overrun flag */
|
|
hdma->DMAmuxRequestGenStatus->RGCFR = hdma->DMAmuxRequestGenStatusMask;
|
|
|
|
/* Update error code */
|
|
hdma->ErrorCode |= HAL_DMA_ERROR_REQGEN;
|
|
|
|
if (hdma->XferErrorCallback != NULL)
|
|
{
|
|
/* Transfer error callback */
|
|
hdma->XferErrorCallback(hdma);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* HAL_DMA_MODULE_ENABLED */
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|